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Kernel: Make copy_{from,to}_user() return KResult and use TRY()

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This makes EFAULT propagation flow much more naturally. :^)
This commit is contained in:
Andreas Kling 2021-09-05 17:38:37 +02:00
parent 9903f5c6ef
commit 48a0b31c47
57 changed files with 318 additions and 551 deletions
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3
Kernel/Syscalls/chdir.cpp
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@ -52,8 +52,7 @@ KResultOr<FlatPtr> Process::sys$getcwd(Userspace<char*> buffer, size_t size)
size_t ideal_size = path.length() + 1;
auto size_to_copy = min(ideal_size, size);
if (!copy_to_user(buffer, path.characters(), size_to_copy))
return EFAULT;
TRY(copy_to_user(buffer, path.characters(), size_to_copy));
// Note: we return the whole size here, not the copied size.
return ideal_size;
}